@while directive

The @while directive allows for simple loops. For example:

// Calculate 1 + 2 + ... + n
@def int mSum(int n) =
{
    @let int sum = 0
    @let int i = 1
    @while (i <= n)
    {
        @let sum = sum + i
        @let i = i + 1
    }
    sum
}
@assert( mSum(4) == 10 )

// Generate "1+2+...+n"
@def string mGenerateSum(int n) =
{
    @let string sum := 1
    @let int i = 2
    @while (i <= n)
    {
        @let sum := sum+i
        @let i = i + 1
    }
    @str(sum)
}
@assert(@str(mGenerateSum(4)) == "1+2+3+4")